Cobra Series Mamba Chastity Cage | F312A Large Size - Silver

The Cobra Series Mamba is designed for men who want calm, steady control without giving up comfort.  Its smooth, snake-like shape follows the body naturally, making it easy to wear for long hours without distraction.

Instead of harsh edges or tight pressure, the Mamba uses soft curves to guide your cock downward and keep it relaxed.  It holds you securely without crushing or pinching, so you can sit, walk, and move through your day feeling contained but not stressed.

Crafted from solid stainless steel in its natural silver finish, the surface feels cool, clean, and reassuring against the skin.  The polished steel gives a quiet, disciplined look—less flashy, more serious.  Gentle openings along the cage allow airflow, helping keep everything dry and comfortable during extended wear.

This cage is available in three sizes: Small, Medium, and Large, so you can choose the fit that suits your body best.  It can also be matched with different rings or support straps if you want extra stability or a stronger sense of lock-in.

The Silver Mamba is simple, controlled, and confident.  It’s made for men who want a reliable chastity cage they can trust every day—no drama, just quiet control.

• Cage Model: F312A 
• Standard Ring Model: K13
• Wearable Ring Model: K13A
• Color: Silver
• Cage Size: Large
• Cage Length: 4.53 inch / 115 mm
• Cage Diameter: 1.41 inch / 36 mm
• Material: 304 grade Stainless Steel
• Horizontal inner diameter of the urination hole: 0.70 inch/ 18mm
• Vertical inner diameter of the urination hole: 0.35 inch/ 9mm

BASE RING DIAMETER- [OPTIONAL]：

• 1.57 inch / 40 mm
• 1.77 inch / 45 mm
• 1.90 inch / 50 mm 
• 2.17 inch / 55 mm

ACCESSORY- [OPTIONAL]：

• Name: Three-Way Support Belt
• Model: PU10
• Material: PU
• Waistline: 74-106 cm (29.13-41.73 inch)
• Compatible with all FRRK Chastity Cages

• Name: Silicone Catheter
• Model: DG15
• Material: Silicone
• Color: Black, Pink
• Total Length: 85mm / 3.35 inch
• Insertable Length: 69mm / 2.71 inch
• Starting Diameter: 6mm / 0.23 inch
• Maximum Diameter: 9mm / 0.35 inch
• Diameter Of The Urine Outlet (drainage Hole): 5mm / 0.20 inch

• 1 Ring
• 1 Cage
• 1 Metal Padlock with 2 Keys

ADD SILICONE CATHETER | OPTIONS

• 1 Ring
• 1 Cage
• 1 Silicone Catheter
• 1 Metal Padlock with 2 Keys

ADD SUPPORT BELT OPTIONS | OPTIONS

• 1 Ring
• 1 Cage
• 1 Three-Way Support Belt
• 1 Metal Padlock with 2 Keys

ADD SUPPORT BELT & OPTIONS SILICONE CATHETER | OPTIONS

• 1 Ring
• 1 Cage
• 1 Silicone Catheter
• 1 Three-Way Support Belt
• 1 Metal Padlock with 2 Keys

*Your privacy is of our utmost importance. All of our items get shipped out VERY DISCREET. With no weird markings on the packaging of any kind. It will be your little naughty secret and no one will ever know what's inside.